"Dozens of boil water advisories have been issued in Alberta First Nations communities, one after E. coli was detected at a daycare, others after mice were found in water tanks.

In all, Health Canada has issued 56 drinking water advisories affecting First Nations communities in Alberta since April 2015 — more than the 52 orders Alberta Health Services made for the rest of the province over the same time period.

Most of the Health Canada advisories have ended, but 11 remained in place as of May 31. Five have been in effect for at least five years."